Antirooter instrument.



H. M. SHEER.

ANTIROOTER INSTRUMENT. APPLICATION FILED APR-3.1915.

Patented Aug. 10, 1915.

I t1on.

. ammy M; SHEER, 'OFQUINCY, ILLINOIS... 1

To all whom it may concern.

Be it known that I, HENRY citizenof the United States, residing at Quincy, in the county of Adams and State of Illinois, have invented certain new and useful Improvements in AntirooterInstruments, of whichthe following is a specifica- M. SHEER, a

My invention relates to an improvement in anti-rooter instruments, to provide an instrument cord on the bridge of a hogs nose, which will effectually prevent his rooting'and preclude the possibility of the cord growing together and requiring a second operation.

In the accompanying drawings :Figure l is a view in perspective; Fig. 2 is a side elevation with a portion broken away, the full lines showing the normal position of the cutters or blades, and the dotted lines the position when the cutting operation is practically completed; Fig. 3 is a view looking toward the knives or cutters; Fig. 4 is a transverse vertical sectional View through the instrument at the point where the knives or cutters are pivoted; and Fig. 5 is a fragmentary view showing a single pair of knives or cutters centrally mounted. Fig. 6 is a modification.

A, represents a sleeve or frame; and 1, is a rod fitted to slide therein. The frame A has the two finger-pieces 2, 2, beneath which the operator inserts his first two fingers, and the rod 1 has the crotch 3 to receive the thumb where it joins the hand. The parts 2 and 3 are preferably set at an angle to each other, as shown in Fig. 8, to conform more nearly to the relative position of the parts of the hand, namely the base of'the thumb and two first fingers, to make it as easy as possible for the operator to manipulate the instrument. 1

A spring 4 fills the space between the. frame or sleeve and the crotch, and holds them apart, as shown in Figs. 1 and 2.

Knives or cutters 5, 5, and 6, 6, are pivotally mounted on the stud 7 carried by the end of the rod, washers 8 8, being employed to hold the knives or cutters suitably spaced and in position; The links 9, 9, pivotally connect the outer ends of the knives or cutters with the. frame or sleeve A.

In the form shown in Fig. 5, a single set of knives or cutters 10 and 11 is shown, the lower end of the rod 1 being divided or binivrmoornia INSTRUMENT.

Specification of Letters Patent. Application filed April 3,1915. Seria1No.18,866.

the. object being for severings'the animal, while the cutting Patented Aug. 10, 1 915.

furcated as at 12 to receive them and the washers 13, 13 on the stud 14. I

Theshape of the knives or. cutters is pecullar, as shown,"namely they are in the general form of a nating in the sharp edges 15, 15, which ordis narily are protected by the adjacent knife, as shown in Fig. 2, and which do the cutting, they terminating in the sharp hook-like points 16, 16,:wh-ich make the first incision compound. curve, termi in. the cord tobe cut. In applying the instrument, it is held with its parts in the normal position shown in full lines in Fig. 2, and placed with the points 16, 16, astride the cord to be severed;

This can bedone without either afrighting or hurting the animal; and by a quick pressure or contraction between thumb and fingers, while thus holding, the spring 4 is compressed, the instrument naturally will be forced firmly against the snout of the of the cord proceeds, which is done quickly and with a minimum ofpain.

While it is preferred to make two cuts at a time so that a section of the cord is cut out to prevent their growing together later, and for this reason the double set of blades as shown in Figs. 1, 2, 3 and 4 is preferred, still a single set might be employed, as shown in Fig. 5,.and two incisions be made.

The spring itself when compressed is adapted to serve as a stop to prevent further movement of the hook end of the knives or cutters, it being intended that they should just a little more than meet each other when the springis compressed.

The holes 17, 17, afford a convenient means of lubricating the moving parts.

More or less slight changes might be resorted to in the form and arrangement of the several parts described without departure from the spiritand scope of my inven tion, and hence I do not wish to be limited to the precise construction herein set forth, as for instance in Fig. 6 is shown a construetion in which the spring is dispensed with, and the sliding parts A and 1 are provided with finger and thumb holes 2 and 3 to enable the operator to move the parts positively in both directions without the aid of a spring.

I claim:

1. An anti-rooter instrument comprising two parts slidably connected together and T cri ic;-

two parts s1idab1y springactuated,

spring-actuated, on e having handles and the s other a crotch set at an angle to each other Copies of this patent inay be ohtained for 7 having finger-pieces thereon,

the firee ends-of The cornbination of Zor sleeve a rod slidably fitted therein having a crotch on one end,

and a compressible spring mounted on the rod and confined between the end of the sleeve or frame and the crotch, knives or cutters-vpivotally connected with one end of vthe rod, and links extending from the free ends I of the knives orrz-vcutters to the frame or sleeve, whereby the knives or cutters are controlled by the relative positions of the sleeve and-rod. l, T

- In testimonywhereof-l affix my signature, in the presence of two witnesses. HENRY M. SHEER.

' Witnesses;

'ESTHE-RQO. BRmKon'rLuR,

J. R. BAUMBERGER.

fiv-e hleiits lay" addressing the Commissioner of Patents. .Washington,D.G. i I i 

